Basic configuration for nginx with rails app using unicorn

simple-nginx-site.conf

upstream appname_unicorn {
  server unix:/var/www/appname/shared/unicorn.sock fail_timeout=0;
}
 
server {
	listen 80;
	server_name www.domain-name.com;
	rewrite ^(.*) http://domain-name.com$1 permanent;
}
 
server {
	listen 80;
	server_name domain-name.com *.domain-name.com;
	root /var/www/appname/current/public;

	location / {
		try_files $uri @appname;
	}

	location @appname {
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header Host $http_host;
		proxy_redirect off;
		proxy_pass http://appname_unicorn;
	}
}